JPS6450698A - Supervisory and controlling system - Google Patents

Supervisory and controlling system

Info

Publication number
JPS6450698A
JPS6450698A JP20746887A JP20746887A JPS6450698A JP S6450698 A JPS6450698 A JP S6450698A JP 20746887 A JP20746887 A JP 20746887A JP 20746887 A JP20746887 A JP 20746887A JP S6450698 A JPS6450698 A JP S6450698A
Authority
JP
Japan
Prior art keywords
supervisory
controlling device
line
order
order supervisory
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP20746887A
Other languages
Japanese (ja)
Inventor
Osamu Tabata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP20746887A priority Critical patent/JPS6450698A/en
Publication of JPS6450698A publication Critical patent/JPS6450698A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To help the transmission and reception of command/response in supervisory and control which a high-order supervisory and controlling device executes irrespective of the disconnected places of lines for present/stand by-only lines by providing a public line connecting interface part only in a low-order supervisory and controlling device in a place most remote from the high-order supervisory and controlling device. CONSTITUTION:If the present/stand by-only lines 6 and 7 are disconnected between low-order supervisory and controlling devices 22 and 23, the command of supervisory and control is transmitted from the high-order supervisory and controlling device 1 through the command line of the present-only line 6 between the low order supervisory and controlling device on a side near to the high-order supervisory and controlling device 1, and the high-order supervisory and controlling device 1 receives the response through the response line of said line 6. The command is transmitted from the high-order supervisory and controlling device 1 to a low-order supervisory and controlling device 24 through a public line connection device 3 and a public line network 4, and furthermore, to the low-order supervisory and controlling device 23 through the command line of the stand by-only line 7 between the disconnected place and the low-order supervisory and controlling device on the side farther than the high- order supervisory and controlling device 1, and the high-order supervisory and controlling device 1 receives the response through the response line of said line 7 by a reverse path.
JP20746887A 1987-08-20 1987-08-20 Supervisory and controlling system Pending JPS6450698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20746887A JPS6450698A (en) 1987-08-20 1987-08-20 Supervisory and controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20746887A JPS6450698A (en) 1987-08-20 1987-08-20 Supervisory and controlling system

Publications (1)

Publication Number Publication Date
JPS6450698A true JPS6450698A (en) 1989-02-27

Family

ID=16540265

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20746887A Pending JPS6450698A (en) 1987-08-20 1987-08-20 Supervisory and controlling system

Country Status (1)

Country Link
JP (1) JPS6450698A (en)

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